Allen-Bradley 1492-J3 IEC Terminal Block

Product Overview

The 1492-J3 serves as a high-density, single-circuit IEC Feed-Through Terminal Block within the Allen-Bradley 1492 family. This 5mm wide component facilitates efficient point-to-point wiring on standard 35mm DIN rails. It supports a wide range of industrial wire gauges while maintaining a compact footprint to save cabinet space. We provide this unit as 100% Brand New original hardware, ensuring optimal conductivity and mechanical grip for your control system's electrical distribution.

Technical Specifications

The 1492-J3 utilizes a rugged screw-clamp design for reliable electrical termination:

Engineering Advantages

• Optimized Space Efficiency: The 5.1mm housing width allows for a high density of terminations per foot of DIN rail. This reduces the size of junction boxes and control cabinets in complex automation projects.

• Superior Vibration Resistance: The screw-clamp mechanism maintains a gas-tight connection that resists loosening from mechanical shock or thermal expansion. This ensures long-term signal integrity without the need for periodic retightening.

• Universal DIN Rail Compatibility: The snap-on foot design allows for rapid mounting on standard 35mm top-hat rails. This facilitates easy expansion or reconfiguration of the terminal bank.

• Side-Entry Bridge Support: The 1492-J3 supports center-jumping and side-bridging accessories. This enables engineers to distribute common power or neutral signals across multiple blocks quickly and neatly.

• High-Visibility Marking: The block features dedicated slots for snap-in markers. This allows for clear, professional-grade labeling of every circuit, which speeds up troubleshooting and maintenance.

Installation Guidelines

1. DIN Rail Alignment: Position the 1492-J3 over the 35mm rail and press down firmly until the foot locks onto the rail edge.

2. Wire Preparation: Strip approximately 10mm of insulation from the wire. Insert the conductor fully into the clamp cage to ensure the screw clamps onto the copper, not the insulation.

3. Torque Application: Use a flat-head screwdriver to apply between 0.4 and 0.8 Nm of torque. Correct torque prevents wire damage while ensuring a permanent electrical bond.

4. End Protection: Always install a 1492-EBJ3 end barrier at the end of a terminal block run to cover the exposed metal parts and prevent short circuits.

FAQs

Q: What is the maximum wire size the 1492-J3 can accommodate?

A: The 1492-J3 accepts wire sizes up to 12 AWG (2.5 $mm^2$). For larger gauges, consider the 1492-J4 or 1492-J6 modules.

Q: Can I use this terminal block for both DC and AC circuits?

A: Yes. The 1492-J3 handles both AC and DC voltages up to a maximum rating of 600V, making it suitable for motor control, PLC power distribution, and signal loops.

Q: Does the 1492-J3 require an end cap?

A: Yes. Because one side of the terminal block is "open" to expose the bus bar, you must install a 1492-EBJ3 end barrier at the end of the stack to ensure an IP20 safety rating.

Q: Is the material flame retardant?

A: Absolutely. The housing uses Polyamide 6.6, which carries a UL 94-V0 flame rating, the highest standard for self-extinguishing plastic in electrical components.